Closure for collapsible tubes or bottles



June 25, 1963 s. WONSO CLOSURE FOR COLLAPSIBLE TUBES 0R BOTTLES 3 Sheets-Sheet 1 Filed March 24, 1961 x w w w. V w 1" :J

June 25, 1963 s. woNso 3,095,128

CLOSURE FOR COLLAPSIBLE TUBES OR BOTTLES Filed March 24, 1961 3 Sheets-Sheet 2 Stanley Wonso I N VEN TOR Am 40.62. BY n' 3 United States Patent 3,095,128 CLOSURE FOR COLLAPSIBLE TUBES 0R BD'ITLES Stanley Wonso, 9940 S. Crawford Ave., Oak Lawn, Ill. Filed Mar. 24, 1961, Ser. No. 98,196 6 Claims. (Cl. 222-514) This invention comprises a novel and useful closure for collapsible tubes or bottles and more particularly comprises an improved cap or closure member for use with various types of receptacles.

The primary object of this invention is to provide an automatic dispensing closure designed particularly for collapsible metal or pliable plastic tubes, glass, ceramic or rigid plastic bottles and for dispensing practically all types of products ranging from a liquid to a heavy paste.

A further object of the invention is to provide a closure in accordance with the foregoing object which shall be durable, simple in construction, of a relatively low cost, and shall be highly effective in its operation.

A still further object of the invention is to provide a closure in conformity with the above mentioned objects which shall be leak-proof, sanitary and of a pleasing and compact design particularly adaptable for use with collapsible metal tubes, or bottles.

Still another object of the invention is to provide an automatic closure device in accordance with the foregoing objects wherein the closure device shall have a lateral discharge port, external screw threads at its base and a cavity in the upper end of the neck of the closure which shall provide a seal seat between the rim and wherein the hole that communicates with the collapsible tube interior.

Still another object of the invention is to provide a closure having a quick positive opening and closing action with a cap that cannot be readily removed or lost; and wherein in its open position the cap will afford a wasteproof use of the contents of the receptacle and While in the closed position will afford a clean, leakproof and sanitary storage condition for the contents of the receptacle.

Yet another object of the invention is to provide a closure having improved means for introducing air into the void within the container at the time the contents are being dispensed in order to effect a free flow of the liquid to be dispensed therefrom, the normal closing action of the closure sealing this air vent.

Still another object of the invention is to provide a means for afiixing tamper-proof seals and/ or revenue and excise tax stamps in a generally acceptable manner and as required to the closure when used for bottles or other containers.

Still another specific object of the invention is to provide a novel construction of an automatically acting closure for receptacles wherein the device can readily be constructed in different arrangements to perform its desired functions in connection with different types of receptacles and wherein the moving parts of the device shall be effectively enclosed.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to the like parts throughout, and in which:

FIGURE 1 is a fragmentary view in vertical central section showing one embodiment of the automatic closure of this invention applied to a receptacle;

FIGURE 2 is a horizontal sectional detail view taken substantially upon the plane indicated by section line of FIGURE 1 and showing device in the closed position thereof;

with FIGURE 2 the v7 FIGURE 3 is a View similar to FIGURE 1 but showing the position of the parts when the device is in its dispensing position;

FIGURE 4 is a view similar to FIGURE 1 but showing a second embodiment or form of the automatic closure;

FIGURE 5 is a view similar to FIGURES 1 and 4 but showing a still further form of the invention in which the automatic closure is secured in a different manner to a different type of receptacle;

FIGURE 6 is a view similar to FIGURE 4 and 5 but showing still another form of the invention in which the automatic closure is secured in a different manner to a different type of receptacle.

FIGURE 7 is a view similar to FIGURE 6 of yet another embodiment of the invention and showing the same mounting arrangement of the same upon a receptacle as shown in FIGURE 6;

FIGURE 8 is a view in vertical section through a further embodiment of the enclosure applied-to a glass bottle and incorporating therein an air vent automatically operating with the functioning of the closure;

FIGURE 9 is a view similar to FIGURES 1 and 4 but yet of another embodiment of the invention;

FIGURE 10 is a view similar to FIGURE 9 but showing the position of the parts when the device is in its dispensing position; 7

FIGURES 11 and 12 are perspective views showing the modified elements employed in the embodiments of FIG- URES 9 and 4 respectively.

Reference is now made first to FIGURES l3 for an understanding of the basic principles of this invention as applied to a preferred embodiment for use with receptacles such as collapsible tubes.

In FIGURES 1-3, the numeral 10 designates the body portion of the receptacle having a closed lower or rear end, not shown, together with an upper or forward portion which is diametrically reduced as at 12 to provide an annular seat 14. This upper portion terminates in a preferably cylindrical neck or stem 16 having a cylindrical counterbore 27 in its open upper end which latter terminates in an annular surface or seat 20 for a purpose to be subsequently apparent. The neck 16 is provided with a laterally positioned discharge orifice 22 by means of which the contents within the receptacle may be dispensed as set forth hereinafter.

Upon its exterior surface, and adjacent its junction with the upper end wall 24 of the receptacle 10, the neck 16 is provided with an externally threaded portion as at 26. The open upper end of the neck 16 has its counterbore 18 therein provided with an annular seat 28 at its lower end which constitutes part of a novel sealing means which is located inwardly or below the dispensing orifice 22 for a purpose to be subsequently set forth.

Slidably and rotationally received upon the neck 16 .is a closure member in the form of a sleeve 30 which snugly embraces the exterior cylindrical surface of the neck 16 and is considerably longer than the latter. The closure sleeve 30 has an upper end wall 32 while its lower end is provided with a laterally outturned flange 34. Adjacent its lower end the internal cylindrical surface of the sleeve 30' is provided with internal screw threads 36 which cooperate with the threads 26 at. the lower portion of the neck or stem 16. It will thus be apparent that by rotating the sleeve upon the neck, the threaded portion may be caused to selectively engage or disengage to thereby secure or lock the closure member to the neck or to release the same therefrom. 7

Intermediate its ends the sleeve is provided with laterally positioned discharge means which as shown in the upper end of the counterbore 27 serves 'sleeve and the sealing veniently comprise an inturned jection it will abut against this embodiment consists of a relatively large area orifice 38 together with av relatively smaller area discharge orifice 40. The orifice 38 is preferably of the same cross sectional area as the discharge orifice 22 in the neck 16 of the receptacle so as to effect the maximum nate of discharge of the contents when these orifices are aligned. However, the minimal .area discharge orifice 4i} is of a sufficient cross sectional area, smaller than that of the orifice 22, so that when registered therewith a restricted flow or discharge of the contents of the receptacle may be effected. The purpose of these two sizes of orifices is that when the large orifice is in registration as shown in FIGURE 3, a relatively great rate of discharge of the contents of the receptacle can be effected, as for example when discharging toothpaste, shaving cream or the like. On the other hand, when the smaller area orifice 40 is caused to registena restricted rate of flow is obtained which is useful when dispensing medicinal preparation from the receptacle. Thus, the same closure member can be utilized for receptacles having different types of contents to be dispensed therefrom.

A sealing means is provided cooperating with the closure sleeve 30 and the receptacle neck 16 and disposed within the latter. In the arrangement shown in FIG- URES 1 3, this'closure means consists of a cylindrical plunger 42 which is preferably slidably received within the counterbore 18 and is insertable through the open upper end of the latter, the bottom end of this plunger being movable into a sealing and seating engagement upon the annular seat 28 previously mentioned. When so seated, as shown in FIGURE 1, passage of the contents of the receptacle upwardly through the neck 16 is completely prevented from reaching the lateral discharge orifice 22 in the neck as clearly shown in FIGURE 1. However, when the plunger is raised as shown in FIG- URE 3, this sealing means is removed and registration between the orifices 38 or 40 is effected depending upon the rotational adjustment of the sleeve with respect to the receptacle neck. In this latter position, the upwardly retracted plunger 42 by its snug sliding fit within to seal the upper end of the latter and prevent the escape of the contents of the receptacle therefrom.

At its'upper end, the plunger 42 is provided with a laterally outturned flange 44 and a compression spring 46 is disposed between'this flange and the previously mentioned annular surface 20 at the upper end of the neck 16 of the receptacle. The spring surrounds the plunger and yieldingly urges the latter upwardly. Inasmuch as the upper end of the flange 44 abuts against the end wall 32 of the closure sleeve 30, it is obvious that this spring will'yieldingly urge the receptacle closure plunger 42 from the sealed and closed position of FIGURE lto their open and dispensing position of FIGURE 3 'as scenes the screw threaded locking means 26, 36 of the neck of the receptacle and the closure sleevehave been disengaged.

' Stop means are providedfor preventing immediate and quick registration of the orifices in the stern and in the sleeve with each other as soon as the locking means 26, 36 have been disengaged. This stop means 'may constop lug'as at 50' which is struck inwardly from the wall of a retainer cap 52 and is positioned to overlie and be engaged by the flange 34 on the lower end of the sleeve when the latter is moved upwardly under the impetus of the spring 46. In order to effect complete upward travel of the sleeve and disengage the latter fromthe action of the stop .means 50, the flange 34 of the sleeve is provided with radially extending notches asat 56, see FIGURE 2, there in which upon rotational adjustment of the sleeve is adapted to register with the stop projection 50 to permit passage of the flange above this projection. The arrangement is such that when the flange has passed the prothe upper wall 58 of the retainer cap 52 as shown in FIGURE 3 and will lie above the inwardly extending stop projection 50. When in this latter position, the sleeve can then be rotated sufliciently to enable a selected one of the discharge orifices 38 or 40 to be caused to register with the discharge orifice 22 in the neck of the receptacle.

'Ihe retainer cap 52 has its lower end received upon the diametrically reduced cylindrical portion 12 of the receptacle and abutting against the shoulder or annular seat 14 thereon. The retainer may be held in place in any suitable manner, as by frictional fit, by screw threads 'or the like. Preferably, however, the exterior surface of the retainer cap .and of the receptacle 1t! constitute a flush and smooth continuation of each other.

It will be noted that an axial aperture 60 in the top Wall 32 of the sleeve registers with the corresponding bore 62 in the upper end of the sealing plunger 42 to provide a recess which may be utilized to receive the brand flag,

' price tag or display advertising pertaining to the contents 4 it is possible to form of the receptacle.

In the embodiment of FIGURES l-3 the seal-ing plunger 42 is disclosed as constituting a separate element from the closure sleeve 30. However, as shown in FIGURE these elements as a single member. Thus, asshown in FIGURE 4, the same reference numorals have been applied to the same parts as those described in connection with FIGURES 1-3, it being un derstood that the construction is identical except for the one-piece construction. Thus, the closure sleeve indicated same function.

has an integral inwardly projecting reentrant portion 72 in the form of the closure plug. The same axial bore 74 is provided which corresponds to the aligned bore 60 and 62 of FIGURE l and performs the Except for its integral construction, the relationship and the operation of the parts is identical to that previously described. The advantage of this construction is that the entire closure member may be readily formed or molded from suitable plastic materials in a very economical manner.

In FIGURE 5 the-re is shown a further embodiment of this invention in which the closure assembly is illustrated as being mounted in a somewhat different manner upon the upper end of the receptacle or container 80, the latter being preferably of the collapsible tube type. In this arrangernent the upper end of the receptacle is provided with an inturned end wall as at 82 from which rises a periphby the numeral 78 eral upstanding sleeve 84 whose uppermost edge as shown lower end of a conical or frusto-conical retaining cap 92 having a top wall 94, which is apertured as at 96 to. slidably and rotatably receive therein the closuresleeve 98. Rising from the central portion of the top wall 82 of the receptacle is a neck portion 16 which is identical inconstruction with that set forth l-3 and therefore has its corresponding parts referred to by the same reference numerals. The sleeve 98 is shown as having a re-entrant integral plunger or sealing body 100 which cooperates with the counterbore 27 and with the sealing shoulder or seat 28 in the same manner as the sealing plunger 72 of FIGURE 4. Since the operation'of this form of the invention is identical with that previously described, a further description of the same is deemed to be unnecessary. I

In the arrangement and modification of FIGURE 6 a in connection with FIGURES 'flange 142 as previously described.

annular flange 118 of the stem or neck 120 which is of the same construction as the stems or necks 16 previously described and thus is provided with the same reference numerals for corresponding portions thereof. Thus the cooperating threads 26 and 36 of the neck 120 and of the lower portion of the sleeve or closure member 122 cooperate to rotationally and slidably position the sleeve upon the neck. At its lower end the sleeve has the laterally outturned flange 34 previously mentioned which co operates with the locking stop 50 as previously described. Similarly, there is provided the same sealing plunger 42 slidably received in the countersunk bore 27 in the neck 120 and cooperating with the annular sealing surface or seat 28. The laterally directed discharge orifice 22 in the neck similarly cooperates with discharge orifices 38 and 40 in the sleeve. Finally, a compression spring 46 seating upon the annular seating surface 20 at the upper end of the neck 120 abuts against the annular outturned flange 44 of the sealing plunger 42 to thus yieldingly urge the plunger and the top wall 32 of the sleeve 122 to an upward position. The same axial bores 69 and 62 are provided as in FIGURES 1-3 and for the same purpose. The operation of this form of the invention except as to the construction of the retaining and mounting means by which the closure assembly is secured to the receptacle is identical to that previously described.

FIGURE 7 shows still another construction similar to FIGURES and 6 but in which the over-all height or length of the receptacle and its closure assembly is reduced to some extent by recessing or embedding the closure assembly within the volume of the receptacle. Thus, the same receptacle 110 and with the same reference numerals for its component parts is provided as that discussed in connection with FIGURE 6. Here, however,

is provided an end wall seated in the recess 114 and retained thereon as by a retainer lid 132 having a depending rim 134 which embraces the thickened edge 112 of the upper end of the receptacle and has an inturned annular flange 136 seating in the annular groove 116 to thereby lock end wall 13!} upon which is mounted the dispensing closure, to the receptacle.

This retainer lid 132 is provided with an aperture 138 through which is slidably received the cylindrical closure sleeve 140. The closure sleeve has an outturned flange 142 at its lower end which is slidable within the cylindrical bore 144 provided in a re-entrant sleeve 146 carried by .the end wall 130 and which extends downwardly into the interior of the receptacle. An inturned or inwardly struck projection 150 on the retainer lid 132 and projecting into the cylindrical chamber 144 cooperate with the A diametrically reduced cylindrical neck or stem 152 is carried by the annular inwardly directed flange 154 at the lower end of the re-entrant sleeve 146 and projects upwardly through the opening 138 and to 'the exterior of the receptacle. This neck or stem 152 is provided with a closure sleeve 140 and as described in the preceding embodiments, this closure sleeve 140 is provided with the discharge orifices 158 and 160'which cooperate with the dischargeorifice 162 formedin the stem or neck 152. The compression spring 164 is disposed between the annular shoulder166 on the upper end of the stem 152 and an annular flange 168 projecting outwardly from the closure or sealing plug 170 which is slidable in the counterbore 172 formed within the stem 152 which cooperates with the sealing seat 174 therein. As in the preceding embodiment, registering apertures and 182 are provided at the top wall 184 of the sleeve and in the sealing plunger 170 for the same purpose previously set forth. The operation of this form of the invention is identical to that previously described except for the specific construction of the mounting of the closure assembly and its relationship to the upper end of the receptacle.

A somewhat different construction of closure assembly is provided for receptacles of a more rigid type such as bottles and the like. Thus, as shown in FIGURE 8 a receptacle 200 of glass or other suitable material of any desired shape is provided with a cylindrical neck 202 having a diametrically reduced upper portion 204 which is provided with external screw threads as at 206. In the arrangement of FIGURE 8 the numeral 210 designates generally an attachable neck extension for the bottle. This extension consists of a neck 212 which is identical with the necks 16 or 152 of the previously described embodiments and thus is provided with the same reference numerals to designate the same structural features. This neck is coaxially positioned within a cylindrical mounting sleeve 214 with which it is integrally united therewith by an annular web 216 at the 'lower ends of each of these members. At the upper end of the mounting sleeve 214 there is provided an outturned annular flange 218 which is adapted to seat as by means of a leakproof gasket 220 upon the upper end of the neck portion 204 of the bottle. Slidably received for rotational and sliding movement upon the neck 212 is the closure sleeve 222 which is identical with the closure sleeve members previously described in connection with the embodiments of FIGURES 1-3 or FIGURE 4 and thus is provided with the same reference numerals with respect thereto.

A retaining cap is provided for removably but fixedly securing the neck extension 210 to the neck of the bottle 200. Thus, there is provided an internally threaded gland 224 which engages the threads 206 and has a wall 226 at its upper end which wall is apertured as at 228 to rotatably and slidably receive the sleeve 222 therethrough, is further apertured as at 230 to receive an upwardly projecting locating pin 232 carried by the previously mentioned annular flange 218 and is further provided with vent apertures as at 234. In this form of the invention,'however, the previously mentioned locking means such as that shown at 50, in FIGURES 1-3 and 56 in FIGURE 2 is no longer necessary and these are omitted. Instead, the annular outturned flange 236 at the lower end of the closure sleeve 222 is engaged upon a gasket 238 or the like which may be adhesively secured thereto and which thus rests upon the bottom web 216 establishing a tight sealing engagement therewith, and also closing the vent opening 240 formed in a depending tubular stem 242 carried by the web 216 and opening into the annular space 244. A vent conduit 246 is secured to and surrounds the tubular extension 242 and terminates adjacent the lower end of the receptacle for the purpose of admitting air to the interior of the latter when the receptacle is inverted to permit discharge of its contents.

A cylindrical retainer cap 254 having a closure top wall 252 is provided with a recess 258 and a depending skirt 256 which abuts against the top surface of the retainer gland 224.

In assembling this form of the invention the sealing plunger 42 and the spring 46 are properly assembled within the sleeve 222 and the sealing ring or gasket 238 is then positioned and these elements are then placed about the neck 212.

Thereupon the threaded portions of the neck and sleeve are engaged to move the closure ring or gasket 238 is caused to close the venting passage 240. The plastic tube 246 is then positioned upon the venting extension 242 whereupon the closure assembly is placed upon the neck of the bottle and secured in place by the retaining gland 224. Thereafter, the cylindrical retainer cap 254 is placed in position and a seal and/or revenue, excise tax stamp 250 is aflixed in a generally acceptable tamper-proof manner.

Obviously this form of the invention may be utilized with other types of containers and in conjunction with the various other arrangements of closure assemblies herein described.

claimed.

operation of the similar to that of of collapsible tube being applied to The form of the invention and the same as shown in FIGURE 9* is very FIGURES l3. Thus the same type 10 is providedwith the same numerals corresponding parts thereof.

Thecylindrical closure sleeve 260, see FIGURE 11, has its annular base flange 262 provided with diametricallyopposed notches 264 on the opposite sides thereof which are adapted to cooperate with the stop projection 50 previously described in connection with the preceding embodiment. The notches 264 each extend about twentyfive degrees of circumferential extent of'the flange. Disposed between the notched annular base flange 262 the sleeve 260 is provided with a circular discharge orifice 266 on one side and with a rectangular discharge orifice 268 diametrically opposite the same.

Thisform of the inventionisparticularly adapted for use with a collapsible metal tube having a closure sleeve 269 formed of a suitable metal with a rolled-on thread at the base of the closure sleeve 260.

, In using this form of the invention, the closure sleeve is unscrewed in the same manner as previously described and when thrust upwardly by the spring 46 is then rotationally adjusted to properly register the selected discharge orifice 266 or 268 with the discharge orifice 22 .in the neck 16 of the tube. Thus by using this form of the invention, the contents of the tube such as toothpaste or the like can be selectively dispensed either as a round stream or as a ribbon-like stream depending upon the orifice selected. Further, it will be noted that in this form of the invention as inthe preceding forms except that of FIGURE 8, the disposition of the flange 262 above the stop projection 50 prevents accidental downward displacement of the closure sleeve and thus prevents an accidental wasteful discharge of the contents of the receptacle. In order to return the sleeve to its closed position'it is necessary to rotationally register the notch 264' of the sleeve with the locking pin or lug 50 in order to move the sleeve down-ward and thus engage the locking threads, and seal contents of tube.

FIGURE 10 shows theposition of the parts of FIG- URE 9 but in the dispensing position.

The arrangement of FIGURE 12 is a perspective view showing the principles of FIGURE 11 applied to the integral sleeve and plunger construction 72 of FIGURE 4.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents, fallwithin the scope of the invention as What is claimed as new is as follows:

I 1. A closure assembly for receptacles of the type having an elongated open ended neck with a lateral discharge orifice intermediate the ends of said neck; said, closure assembly comprising a closure member disposed entirely outside of said neck and including a sleeve slidably embracing said neck, an end wall closing the upper end of said sleeve and overlying the open end of said-neck which is remote from said receptacle, said sleeve having intermediate its ends discharge openings of difierent crossmeans disposed within said sectional areas individually selectively registerable with said discharge orifice, said sleevebeing mounted upon said neck for straight line sliding movement for selectively placing said openings and orifice intoand out of registration, retaining means on said sleeve andneck for releasably but immovably securing sad sleeve to said neck and retaining said openings and orifice out of registration with said orifice being closed by said sleeve, a circumferentially extending outwardly projecting flange on said sleeve, restraining means engageable by said flange for limiting sliding movement of said sleeve upon said neck and preventing movement of said sleeve to an orifice registering position after disconnection of said retaining means, a retaining cap removably secured to said receptacle and surrounding and retaining said sleeve upon said neck, said cap having an end wall with an opening through which said sleeve is movable, said restraining means including an inwardly projecting member on said retaining cap adjacent to and below its end Wall and in the path of straight line sliding said flange having a notch registerable with said member for passage thereby upon rotation of saidsleeve, the distance between said member and said end wall being substantially equal to the thickness of the flange whereupon further rotation of said flange after passing said member will cause said flange to be held captive between'said member and end wall, the last named position of said flange defining an orifice registering position of said sleeve and neck. 2. The combination means disposed within said sleeve and engaging the top of said neck and said sleeve and yieldingly urging the latter towards registration of said discharge orifices.

3. The combination of claim 1 including a sealing means disposed within and movable with said sleeve and movable within said neck and movable to coverand uncover said neck discharge orifice while sealing and closing the open end of said neck.

4. The combination of claim 3 including an annular seat in said neck on the upstream side of said neck discharge orifice, said sealing means being sealingly engageable with said annular seat when said orifices are out of registration.

5. The combination of claim 4 wherein said sealing means comprises a plunger disposed concentricallyin said claim 5 including resilient sleeve and engaging the top of said neck and said sleeve and yieldingly urging the lat- 6. The combination of ter towards registration of said discharge orifices, said;

' resilient means engaging said plunger and urging the latter outwardly against said sleeve.

References Cited in the'file of this patent UNITED STATES PATENTS 1,

' June 3, 1930 1,760,946 Hemmerstein 1,929,794 Roselle Oct. 10, 1933 2,699,885 McClure Jan. 18, 1955 2,721,004 Schultz Oct. 18, 1955 FOREIGN PATENTS i 228,028 Great Britain Jan. 29, 1925 movement of said flange, V

of claim 1 including resilient I 

1. A CLOSURE ASSEMBLY FOR RECEPTACLES OF THE TYPE HAVING AN ELONGATED OPEN ENDED NECK WITH A LATERAL DISCHARGE ORIFICE INTERMEDIATE THE ENDS OF SAID NECK; SAID CLOSURE ASSEMBLY COMPRISING A CLOSURE MEMBER DISPOSED ENTIRELY OUTSIDE OF SAID NECK AND INCLUDING A SLEEVE SLIDABLY EMBRACING SAID NECK, AN END WALL CLOSING THE UPPER END OF SAID SLEEVE AND OVERLYING THE OPEN END OF SAID NECK WHICH IS REMOTE FROM SAID RECEPTACLE, SAID SLEEVE HAVING INTERMEDIATE ITS ENDS DISCHARGE OPENINGS OF DIFFERENT CROSSSECTIONAL AREAS INDIVIDUALLY SELECTIVELY REGISTERABLE WITH SAID DISCHARGE ORIFICE, SAID SLEEVE BEING MOUNTED UPON SAID NECK FOR STRAIGHT LINE SLIDING MOVEMENT FOR SELECTIVELY PLACING SAID OPENINGS AND ORIFICE INTO AND OUT OF REGISTRATION, RETAINING MEANS ON SAID SLEEVE AND NECK FOR RELEASABLY BUT IMMOVABLY SECURING SAID SLEEVE TO SAID NECK AND RETAINING SAID OPENINGS AND ORIFICE OUT OF REGISTRATION WITH SAID ORIFICE BEING CLOSED BY SAID SLEEVE, A CIRCUMFERENTIALLY EXTENDING OUTWARDLY PROJECTING FLANGE ON SAID SLEEVE, RESTRAINING MEANS ENGAGEABLE BY SAID FLANGE FOR LIMITING SLIDING MOVEMENT OF SAID SLEEVE UPON SAID NECK AND PREVENTING MOVEMENT OF SAID SLEEVE TO AN ORIFICE REGISTERING POSITION AFTER DISCONNECTION OF SAID RETAINING MEANS, A RETAINING CAP REMOVABLY SECURED TO SAID RECEPTACLE AND SURROUNDING AND RETAINING SAID SLEEVE UPON SAID NECK, SAID CAP HAVING AN END WALL WITH AN OPENING THROUGH WHICH SAID SLEEVE IS MOVABLE, SAID RESTRAINING MEANS INCLUDING AN INWARDLY PROJECTING MEMBER ON SAID RETAINING CAP ADJACENT TO AND BELOW ITS END WALL AND IN THE PATH OF STRAIGHT LINE SLIDING MOVEMENT OF SAID FLANGE, SAID FLANGE HAVING A NOTCH REGISTERABLE WITH SAID MEMBER FOR PASSAGE THEREBY UPON ROTATION OF SAID SLEEVE, THE DISTANCE BETWEEN SAID MEMBER AND SAID END WALL BEING SUBSTANTIALLY EQUAL TO THE THICKNESS OF THE FLANGE WHEREUPON FURTHER ROTATION OF SAID FLANGE AFTER PASSING SAID MEMBER WILL CAUSE SAID FLANGE TO BE HELD CAPTIVE BETWEEN SAID MEMBER AND END WALL, THE LAST NAMED POSITION OF SAID FLANGE DEFINING AN ORIFICE REGISTERING POSITION OF SAID SLEEVE AND NECK. 